BPD vs Bipolar Disorder: Understanding the Key Differences

Borderline Personality Disorder (BPD) and Bipolar Disorder are two distinct mental health disorders that are often misunderstood and misdiagnosed. Although they share some common symptoms, understanding the key differences between the two is crucial to receiving the right diagnosis and treatment.

What is Borderline Personality Disorder?

BPD is a personality disorder characterized by a persistent pattern of unstable moods, behaviors, and relationships. Individuals with BPD often struggle with fear of abandonment, intense and unstable relationships, self-harm, impulsive behavior, and suicidal thoughts. They struggle to maintain a stable self-identity and often have a distorted perception of themselves and the world around them.

Symptoms of BPD

  • Fear of abandonment
  • Intense and unstable relationships
  • Unstable sense of self-identity
  • Impulsive behavior
  • Self-harm or suicidal thoughts
  • Difficulty regulating emotions
  • Mood swings and irritability
  • Feeling empty or lonely
  • Paranoia or dissociation

Treatment for BPD

Psychotherapy is the primary treatment for BPD, with a particular focus on Dialectical Behavior Therapy (DBT). DBT focuses on teaching coping skills, emotion regulation, and distress tolerance. Medication may be used to alleviate some symptoms, such as depression or anxiety, but should not be relied upon as the sole treatment.

What is Bipolar Disorder?

Bipolar Disorder is a mood disorder characterized by periods of intense highs (mania or hypomania) and lows (depression). The highs and lows can vary in duration and severity, and individuals with Bipolar Disorder may experience periods of stability between episodes. They may also experience psychotic symptoms during a manic or depressive episode.

Symptoms of Bipolar Disorder

  • Periods of mania or hypomania: increased energy, decreased need for sleep, racing thoughts, impulsivity, grandiosity, irritability
  • Periods of depression: sadness, hopelessness, fatigue, changes in sleep or appetite, decreased interest in activity, suicidal thoughts
  • Periods of stability between episodes
  • Psychotic symptoms during manic or depressive episodes (hallucinations or delusions)

Treatment for Bipolar Disorder

Treatment for Bipolar Disorder often includes medication, particularly mood stabilizers, such as lithium. Psychotherapy can also be helpful, particularly Cognitive Behavioral Therapy (CBT) or Interpersonal and Social Rhythm Therapy (IPSRT). Lifestyle changes, such as regular sleep and exercise, can also be effective in managing symptoms.

Differences Between BPD and Bipolar Disorder

Although BPD and Bipolar Disorder share some similar symptoms, there are key differences between the two disorders:

  • Mood: Individuals with BPD experience intense and unpredictable mood swings that can change rapidly, while individuals with Bipolar Disorder experience periods of mania or hypomania and periods of depression that last for several days or weeks.
  • Relationships: Individuals with BPD often have unstable and intense relationships, while individuals with Bipolar Disorder may have difficulty maintaining stable relationships, but they are not necessarily intense.
  • Self-perception: Individuals with BPD have a distorted self-perception and often struggle to maintain a stable sense of self-identity, while individuals with Bipolar Disorder generally have a stable sense of self-identity.
  • Duration of symptoms: Symptoms of BPD can fluctuate throughout the day, while symptoms of Bipolar Disorder generally last for several days or weeks.
  • Treatment: The primary treatment for BPD is psychotherapy, particularly DBT, while the primary treatment for Bipolar Disorder is a combination of medication and psychotherapy.

Getting the Right Diagnosis and Treatment

If you or someone you know is experiencing symptoms of BPD or Bipolar Disorder, seeking professional help is crucial. A mental health professional can diagnose the disorder and provide appropriate treatment. While there is no cure for either disorder, with proper treatment, individuals can manage their symptoms and lead fulfilling lives.

There is hope for recovery and healing. With the right diagnosis and treatment plan, individuals with BPD or Bipolar Disorder can experience significant improvement in their quality of life.


BPD and Bipolar Disorder are two distinct mental health disorders that can be confusing and difficult to distinguish. Understanding the symptoms and differences between the two disorders is essential to receiving the right diagnosis and treatment. Seeking help from a mental health professional is crucial for recovery and healing, and with the right treatment, individuals can manage their symptoms and lead fulfilling lives.


FAQs about BPD vs Bipolar Disorder

What is the difference between BPD and Bipolar Disorder?

BPD (Borderline Personality Disorder) is a mental health condition characterized by extreme mood swings, unstable relationships, impulsive behaviour, and a distorted sense of self. Bipolar Disorder, on the other hand, is a mental illness characterized by mood swings that range from extreme highs (mania) to extreme lows (depression).

Can BPD and Bipolar Disorder occur together?

Yes, it is possible for BPD and bipolar disorder to occur together. In fact, some symptoms of BPD, such as mood swings and impulsive behaviour, can be similar to those of bipolar disorder. However, it is important to note that they are distinct mental health disorders with different diagnostic criteria and treatment approaches.

What are the treatment options for BPD and Bipolar Disorder?

The treatment options for BPD and Bipolar Disorder may vary depending on the severity and individualized symptoms of the patient. However, psychotherapy, medication, and lifestyle changes are common treatment modalities for both disorders. It is important to seek professional help to identify the best treatment options for you.


1. De Meuwsen, J. A., & Hirschfeld, R. M. (2005). Bipolar Disorder and Borderline Personality Disorder: Similarities and Differences in Diagnosis and Treatment. Psychiatric Quarterly, 76(2), 109-140. doi:10.1007/s11126-005-4220-3
2. Paris, J. (2004). Is Borderline Personality Disorder On The Same Spectrum As Bipolar Disorder?. The Journal of Nervous and Mental Disease, 192(10), 673-675. doi:10.1097/0​1.nmd.0000145474.71674.4c
3. van der Hoorn, M., Wlazlo, L., & Tiggelman, D. (2018). Differentiating Bipolar Disorder and Borderline Personality Disorder: A Critical Review of the Literature. Clinical Psychology Review, 68, 47-61. doi:10.1016/j.cpr.2018.09.005